When I did my GCSE ensemble performance my boyfriend, who sang with me, was a bass (he's shifting upwards now, though, and has more of a baritone quality, but that's another story). We did Papageno and Papagena's duet from The Magic Flute and it was the most fun I've ever had singing on stage

. Some awesome scope for comic acting in that duet, if you're up for that.